Advertisements
Advertisements
प्रश्न
What is the pH of a neutral solution?
उत्तर
A neutral solution has a pH value of 7. It is free of ions such as H+ and OH-.
APPEARS IN
संबंधित प्रश्न
Five solutions, A, B, C, D and E, when tested with universal indicator, showed pH as 4, 1, 11, 7 and 9, respectively. Which solution is
- neutral?
- strongly alkaline?
- strongly acidic?
- weakly acidic?
- weakly alkaline?
Arrange the pH in increasing order of hydrogen-ion concentration.
What is an indicator? Name three common indicators.
If someone is suffering from the problem of acidity after overeating, which of the following would you suggest as remedy?
Lemon juice, Vinegar, Banking soda solution
Give reason for your choice.
Explain the pH change as the cause of tooth decay. How can tooth decay caused by pH change be prevented?
What does the pH of a solution signify? Three solution A, B and C have pH values of 6, 4 and 10 respectively. Which of the solutions is highly acidic?
A farmer has found that the pH of soil in his fields is 4.2. Name any two chemical materials which he can mix with the soil to adjust its pH.
Acids and bases can be identified in the laboratory by ______.
Neutral substances do not bring about any change in colour of indicators.
Give names of any two natural indicators.
A milkman adds a very small amount of baking soda to fresh milk. Why does this milk take a long time to set as curd?
